{"id":5842,"date":"2026-03-29T23:33:31","date_gmt":"2026-03-29T14:33:31","guid":{"rendered":"https:\/\/blog.ripla.co.jp\/system\/css3-development-process\/"},"modified":"2026-10-24T15:57:20","modified_gmt":"2026-10-24T06:57:20","slug":"css3-development-process","status":"publish","type":"post","link":"https:\/\/www.ripla.co.jp\/blog\/product\/css3-development-process\/","title":{"rendered":"CSS3\u958b\u767a\u306e\u9032\u3081\u65b9\/\u3084\u308a\u65b9\/\u6d41\u308c\u3084\u65b9\u6cd5\/\u624b\u6cd5\/\u5de5\u7a0b\/\u624b\u9806"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 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class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u7b2c\u4e8c\u306b\u3001\u65e2\u5b58\u30b5\u30a4\u30c8\u306e\u30ea\u30cb\u30e5\u30fc\u30a2\u30eb\u30fb\u30ea\u30c7\u30b6\u30a4\u30f3\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u304c\u3042\u308a\u307e\u3059\u3002\u30ec\u30b9\u30dd\u30f3\u30b7\u30d6\u5bfe\u5fdc\u3084\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6539\u5584\u3092\u56f3\u308b\u306e\u304c\u76ee\u7684\u3067\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">2020\u5e74\u4ee5\u524d\u306b\u69cb\u7bc9\u3055\u308c\u305fWeb\u30b5\u30a4\u30c8\u306b\u306f\u3001CSS3\u3078\u306e\u79fb\u884c\u30cb\u30fc\u30ba\u304c\u3042\u308a\u307e\u3059\u3002\u65e5\u672c\u56fd\u5185\u3067\u306f\u3001\u305d\u306e\u591a\u304f\u304c\u30ec\u30b9\u30dd\u30f3\u30b7\u30d6\u672a\u5bfe\u5fdc\u3067\u3059\u3002\u52a0\u3048\u3066\u3001\u904e\u5ea6\u306aJavaScript\u4f9d\u5b58\u3082\u898b\u3089\u308c\u3001\u79fb\u884c\u30cb\u30fc\u30ba\u306f\u4f9d\u7136\u3068\u3057\u3066\u9ad8\u3044\u72b6\u6cc1\u3067\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u7b2c\u4e09\u306b\u3001\u5927\u898f\u6a21\u306a\u7d44\u7e54\u3067\u306f\u3001\u8907\u6570\u306e\u30d7\u30ed\u30c0\u30af\u30c8\u3078\u4e00\u8cab\u3057\u305f\u30c7\u30b6\u30a4\u30f3\u3092\u9069\u7528\u3059\u308b\u305f\u3081\u3001CSS3\u30d9\u30fc\u30b9\u306e\u5171\u901a\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u7fa4\u3092\u958b\u767a\u3057\u307e\u3059\u3002\u958b\u767a\u671f\u9593\u306f3\u30f6\u6708\u304b\u3089\u534a\u5e74\u4ee5\u4e0a\u306b\u53ca\u3076\u3053\u3068\u3082\u73cd\u3057\u304f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u3044\u305a\u308c\u306e\u30bf\u30a4\u30d7\u3067\u3082\u3001CSS3\u3060\u3051\u3067\u306a\u304fHTML5\u3084JavaScript\u306e\u77e5\u8b58\u304c\u5fc5\u8981\u3067\u3059\u3002React\u3084Vue.js\u3068\u3044\u3063\u305f\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3068\u306e\u9023\u643a\u30b9\u30ad\u30eb\u3082\u6c42\u3081\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n\n\n<div class=\"wp-block-group article-point-box is-layout-flow wp-block-group-is-layout-flow\" style=\"border-color:#d7edf8;border-width:1px;border-style:solid;border-radius:2px;margin-top:24px;margin-bottom:24px;overflow:hidden;\">\n\n<p class=\"article-point-box__header wp-block-paragraph\" style=\"background-color:#2083c7;color:#fff;text-align:center;padding:10px 12px;margin:0;font-size:18px;line-height:1.5;font-weight:700;\"><strong>\u30dd\u30a4\u30f3\u30c8<\/strong><\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"background-color:#fff;padding:16px;margin:0;font-size:18px;line-height:1.9;\">\u5fc5\u8981\u306a\u6a5f\u80fd\u304c\u30ec\u30a4\u30a2\u30a6\u30c8\u3001\u52d5\u7684\u8868\u73fe\u3001\u753b\u9762\u5e45\u3078\u306e\u5bfe\u5fdc\u306e\u3069\u308c\u306b\u5f53\u305f\u308b\u304b\u3001\u65b0\u898f\u69cb\u7bc9\u304b\u65e2\u5b58\u30b5\u30a4\u30c8\u306e\u79fb\u884c\u304b\u3092\u5148\u306b\u6c7a\u3081\u3066\u304a\u304f\u3068\u3001\u4ee5\u964d\u306e\u9032\u3081\u65b9\u3092\u7d44\u307f\u7acb\u3066\u3089\u308c\u307e\u3059\u3002<\/p>\n\n<\/div>\n\n\n\n<h2 id=\"css3-development-process\" class=\"wp-block-heading\" style=\"background:#c3d3e1; padding:12px 20px; margin:32px 0 16px; color:#222;\">\n<strong>CSS3\u958b\u767a\u306e\u9032\u3081\u65b9<\/strong>\n<\/h2>\n\n\n<figure class=\"wp-block-image aligncenter size-full\" style=\"max-width:640px;margin:24px auto;\"><img loading=\"lazy\" decoding=\"async\" data-attachment-id=\"182810\" data-permalink=\"https:\/\/www.ripla.co.jp\/blog\/image-1-e4700f2b8d06\/\" data-orig-file=\"https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/10\/image-1-e4700f2b8d06.webp\" data-orig-size=\"1672,941\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;,&quot;alt&quot;:&quot;&quot;}\" data-image-title=\"CSS3\u958b\u767a\u306e3\u3064\u306e\u30d5\u30a7\u30fc\u30ba\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;\u4f01\u753b\u3067\u5b9a\u3081\u305f\u8981\u4ef6\u3092\u8a2d\u8a08\u3078\u3064\u306a\u304e\u3001\u6700\u5f8c\u306b\u8868\u793a\u3068\u54c1\u8cea\u3092\u78ba\u304b\u3081\u307e\u3059\u3002&lt;\/p&gt;\n\" data-large-file=\"https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/10\/image-1-e4700f2b8d06-1024x576.webp\" src=\"https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/10\/image-1-e4700f2b8d06.webp\" alt=\"\u8981\u4ef6\u5b9a\u7fa9\u30fb\u4f01\u753b\u3001\u8a2d\u8a08\u30fb\u958b\u767a\u3001\u30c6\u30b9\u30c8\u30fb\u30ea\u30ea\u30fc\u30b9\u306e\u9806\u306b\u9032\u3080CSS3\u958b\u767a\u306e\u56f3\u89e3\u3002\" title=\"CSS3\u958b\u767a\u306e3\u3064\u306e\u30d5\u30a7\u30fc\u30ba\" class=\"wp-image-182810\" width=\"1672\" height=\"941\" style=\"display:block;width:100%;height:auto;max-width:640px;\" srcset=\"https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/10\/image-1-e4700f2b8d06.webp 1672w, https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/10\/image-1-e4700f2b8d06-300x169.webp 300w, https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/10\/image-1-e4700f2b8d06-1024x576.webp 1024w, https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/10\/image-1-e4700f2b8d06-768x432.webp 768w, https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/10\/image-1-e4700f2b8d06-1536x864.webp 1536w\" sizes=\"auto, (max-width: 1672px) 100vw, 1672px\" \/><figcaption class=\"wp-element-caption\" style=\"font-size:12px;line-height:1.6;color:#777;margin-top:8px;text-align:center;\">\u4f01\u753b\u3067\u5b9a\u3081\u305f\u8981\u4ef6\u3092\u8a2d\u8a08\u3078\u3064\u306a\u304e\u3001\u6700\u5f8c\u306b\u8868\u793a\u3068\u54c1\u8cea\u3092\u78ba\u304b\u3081\u307e\u3059\u3002<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">CSS3\u958b\u767a\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306f\u3001\u4e00\u822c\u7684\u306aWeb\u958b\u767a\u3068\u540c\u69d8\u306b\u6bb5\u968e\u7684\u306a\u30d7\u30ed\u30bb\u30b9\u3067\u9032\u307f\u307e\u3059\u3002\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u306f\u30e6\u30fc\u30b6\u30fc\u306e\u76ee\u306b\u76f4\u63a5\u89e6\u308c\u308b\u305f\u3081\u3001\u54c1\u8cea\u306e\u898b\u65b9\u306f\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u3068\u306f\u7570\u306a\u308a\u3001\u30c7\u30b6\u30a4\u30f3\u3068\u306e\u6574\u5408\u6027\u3084\u30d6\u30e9\u30a6\u30b6\u4e92\u63db\u6027\u304c\u4e2d\u5fc3\u306b\u306a\u308a\u307e\u3059\u3002\u8981\u4ef6\u5b9a\u7fa9\u304b\u3089\u672c\u756a\u30ea\u30ea\u30fc\u30b9\u307e\u3067\u306f\u30013\u3064\u306e\u30d5\u30a7\u30fc\u30ba\u306b\u5206\u3051\u3066\u898b\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 id=\"requirements-planning\" class=\"wp-block-heading\" style=\"border-left:4px solid #0693e3;padding-left:16px;\"><strong>\u8981\u4ef6\u5b9a\u7fa9\u30fb\u4f01\u753b\u30d5\u30a7\u30fc\u30ba<\/strong><\/h3>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u4f01\u753b\u306e\u6bb5\u968e\u3067\u306f\u3001\u76ee\u6a19\u3068\u6280\u8853\u8981\u4ef6\u306e\u4e21\u65b9\u3092\u5177\u4f53\u5316\u3057\u3066\u304a\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\" style=\"padding-left:1.25em;margin-left:0;line-height:1.9;margin:0 0 18px;\">\n<li><strong>\u76ee\u7684<\/strong>\uff1a\u6539\u5584\u3057\u305f\u3044\u6307\u6a19\u3068\u9054\u6210\u76ee\u6a19\u306e\u8a2d\u5b9a<\/li>\n<li><strong>\u5bfe\u5fdc\u7bc4\u56f2<\/strong>\uff1a\u30d6\u30e9\u30a6\u30b6\u3001\u30c7\u30d0\u30a4\u30b9\u3001\u5fc5\u8981\u306aCSS3\u6a5f\u80fd\u306e\u6d17\u3044\u51fa\u3057<\/li>\n<li><strong>\u691c\u8a3c<\/strong>\uff1a\u30c7\u30b6\u30a4\u30f3\u6848\u3092CSS3\u3067\u5b9f\u73fe\u3067\u304d\u308b\u304b\u306e\u78ba\u8a8d<\/li>\n<\/ul>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">CSS3\u958b\u767a\u306e\u6700\u521d\u306e\u30b9\u30c6\u30c3\u30d7\u306f\u3001\u8981\u4ef6\u5b9a\u7fa9\u3068\u4f01\u753b\u306e\u7b56\u5b9a\u3067\u3059\u3002\u307e\u305a\u300c\u4f55\u306e\u305f\u3081\u306bCSS3\u958b\u767a\u3092\u884c\u3046\u306e\u304b\u300d\u3068\u3044\u3046\u76ee\u7684\u3092\u660e\u78ba\u306b\u3059\u308b\u3053\u3068\u304b\u3089\u59cb\u3081\u307e\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u305f\u3068\u3048\u3070\u3001\u73fe\u5728\u306eWeb\u30b5\u30a4\u30c8\u306e\u30e2\u30d0\u30a4\u30eb\u96e2\u8131\u7387\u304c65%\u306a\u3089\u3001\u30ec\u30b9\u30dd\u30f3\u30b7\u30d6\u30c7\u30b6\u30a4\u30f3\u306e\u5c0e\u5165\u3092\u76ee\u6a19\u306b\u3057\u307e\u3059\u3002\u30e2\u30d0\u30a4\u30eb\u30e6\u30fc\u30b6\u30fc\u306e\u30b3\u30f3\u30d0\u30fc\u30b8\u30e7\u30f3\u7387\u309220%\u6539\u5584\u3059\u308b\u3001\u3068\u3044\u3063\u305f\u5b9a\u91cf\u76ee\u6a19\u304c\u7406\u60f3\u7684\u3067\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u8981\u4ef6\u5b9a\u7fa9\u3067\u306f\u3001Chrome\u3001Safari\u3001Firefox\u3001Edge\u306a\u3069\u5bfe\u5fdc\u30d6\u30e9\u30a6\u30b6\u306e\u6700\u65b02\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u3042\u308f\u305b\u3066\u3001\u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3\u3001\u30bf\u30d6\u30ec\u30c3\u30c8\u3001\u30c7\u30b9\u30af\u30c8\u30c3\u30d7\u306e\u5404\u30d6\u30ec\u30fc\u30af\u30dd\u30a4\u30f3\u30c8\u3082\u6c7a\u3081\u307e\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u5fc5\u8981\u306aCSS3\u6a5f\u80fd\u306b\u306f\u3001\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u3001\u30b0\u30ea\u30c3\u30c9\u30ec\u30a4\u30a2\u30a6\u30c8\u3001\u30ab\u30b9\u30bf\u30e0\u30d7\u30ed\u30d1\u30c6\u30a3\u306a\u3069\u304c\u3042\u308a\u307e\u3059\u3002CMS\u3068\u306e\u7d71\u5408\u3084JavaScript\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3068\u306e\u5171\u5b58\u306a\u3069\u3001\u65e2\u5b58\u30b7\u30b9\u30c6\u30e0\u3068\u306e\u9023\u643a\u8981\u4ef6\u3082\u6d17\u3044\u51fa\u3057\u307e\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">Core Web Vitals\u306e\u30b9\u30b3\u30a2\u76ee\u6a19\u306a\u3069\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u8981\u4ef6\u3082\u5177\u4f53\u5316\u3057\u307e\u3059\u3002\u3053\u306e\u6bb5\u968e\u3067\u306f\u3001\u30c7\u30b6\u30a4\u30ca\u30fc\u3068\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u30a8\u30f3\u30b8\u30cb\u30a2\u304c\u5bc6\u306b\u9023\u643a\u3057\u307e\u3059\u3002\u4e26\u884c\u3057\u3066\u3001Figma\u3084Adobe XD\u3067\u4f5c\u6210\u3057\u305f\u30e2\u30c3\u30af\u30a2\u30c3\u30d7\u3092\u3001CSS3\u3067\u3069\u3046\u5b9f\u73fe\u3059\u308b\u304b\u3092\u691c\u8a3c\u3057\u307e\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u8981\u4ef6\u5b9a\u7fa9\u30d5\u30a7\u30fc\u30ba\u306e\u671f\u9593\u306f\u3001\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u898f\u6a21\u306b\u3082\u3088\u308a\u307e\u3059\u304c\u3001\u4e2d\u898f\u6a21\u306eWeb\u30b5\u30a4\u30c8\u3067\u3042\u308c\u30702\u301c4\u9031\u9593\u304c\u4e00\u822c\u7684\u3067\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u8981\u4ef6\u304c\u66d6\u6627\u306a\u307e\u307e\u6b21\u306e\u30d5\u30a7\u30fc\u30ba\u306b\u9032\u3080\u3068\u3001\u5f8c\u5de5\u7a0b\u3067\u624b\u623b\u308a\u304c\u767a\u751f\u3057\u307e\u3059\u3002\u305d\u306e\u7d50\u679c\u3001\u958b\u767a\u30b3\u30b9\u30c8\u304c\u5f53\u521d\u898b\u7a4d\u3082\u308a\u306e1.5\u500d\u301c2\u500d\u306b\u81a8\u308c\u4e0a\u304c\u308b\u30b1\u30fc\u30b9\u3082\u73cd\u3057\u304f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h3 id=\"design-development\" class=\"wp-block-heading\" style=\"border-left:4px solid #0693e3;padding-left:16px;\"><strong>\u8a2d\u8a08\u30fb\u958b\u767a\u30d5\u30a7\u30fc\u30ba<\/strong><\/h3>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u8a2d\u8a08\u30fb\u958b\u767a\u3067\u306f\u3001\u4fdd\u5b88\u6027\u3068\u518d\u5229\u7528\u3092\u610f\u8b58\u3057\u3066\u9032\u3081\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\" style=\"padding-left:1.25em;margin-left:0;line-height:1.9;margin:0 0 18px;\">\n<li><strong>CSS\u8a2d\u8a08<\/strong>\uff1a\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u5408\u3046\u8a2d\u8a08\u624b\u6cd5\u306e\u9078\u5b9a<\/li>\n<li><strong>\u90e8\u54c1\u8a2d\u8a08<\/strong>\uff1aUI\u8981\u7d20\u3068\u30c7\u30b6\u30a4\u30f3\u30c8\u30fc\u30af\u30f3\u306e\u5171\u901a\u5316<\/li>\n<li><strong>\u958b\u767a\u74b0\u5883<\/strong>\uff1a\u30d3\u30eb\u30c9\u3001\u54c1\u8cea\u78ba\u8a8d\u3001\u30ec\u30d3\u30e5\u30fc\u306e\u4f53\u5236\u3065\u304f\u308a<\/li>\n<\/ul>\n\n\n<p class=\"wp-block-paragraph\" 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class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">FLOCSS\u306fBEM\u3092\u30d9\u30fc\u30b9\u306b\u3001\u65e5\u672c\u306eWeb\u5236\u4f5c\u73fe\u5834\u306b\u5408\u3046\u30ec\u30a4\u30e4\u30fc\u69cb\u9020\u3092\u6301\u3064\u624b\u6cd5\u3067\u3059\u3002\u56fd\u5185\u306e\u5236\u4f5c\u4f1a\u793e\u3067\u306f\u3001\u7279\u306b\u4eba\u6c17\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">React\u3084Vue.js\u3068\u7d44\u307f\u5408\u308f\u305b\u308b\u5834\u5408\u306f\u3001CSS Modules\u3084CSS-in-JS\u3092\u63a1\u7528\u3059\u308b\u30b1\u30fc\u30b9\u304c\u5897\u3048\u3066\u3044\u307e\u3059\u3002CSS-in-JS\u306b\u306f\u3001styled-components\u3084Emotion\u306a\u3069\u304c\u3042\u308a\u307e\u3059\u3002Tailwind 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style=\"padding-left:1.25em;margin-left:0;line-height:1.9;margin:0 0 18px;\">\n<li><strong>\u8868\u793a\u78ba\u8a8d<\/strong>\uff1a\u30d6\u30e9\u30a6\u30b6\u3068\u753b\u9762\u5e45\u3054\u3068\u306e\u8868\u793a\u5d29\u308c\u306e\u6709\u7121<\/li>\n<li><strong>\u901f\u5ea6\u78ba\u8a8d<\/strong>\uff1a\u63cf\u753b\u3084Core Web Vitals\u306e\u6e2c\u5b9a<\/li>\n<li><strong>\u5dee\u5206\u78ba\u8a8d<\/strong>\uff1a\u898b\u305f\u76ee\u306e\u610f\u56f3\u3057\u306a\u3044\u5909\u5316\u306e\u691c\u51fa<\/li>\n<\/ul>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 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18px;\">\u30c6\u30b9\u30c8\u3067\u554f\u984c\u304c\u898b\u3064\u304b\u308c\u3070\u4fee\u6b63\u3057\u3001\u30b9\u30c6\u30fc\u30b8\u30f3\u30b0\u74b0\u5883\u3067\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306e\u6700\u7d42\u78ba\u8a8d\u3092\u7d4c\u3066\u3001\u672c\u756a\u30ea\u30ea\u30fc\u30b9\u306b\u9032\u307f\u307e\u3059\u3002\u30ea\u30ea\u30fc\u30b9\u5f8c\u3082\u3001CSS3\u306e\u30d6\u30e9\u30a6\u30b6\u30b5\u30dd\u30fc\u30c8\u72b6\u6cc1\u306f\u968f\u6642\u5909\u308f\u308b\u305f\u3081\u3001\u5b9a\u671f\u7684\u306a\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u3068\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u304c\u6b20\u304b\u305b\u307e\u305b\u3093\u3002<\/p>\n\n\n\n\n\n<div class=\"wp-block-group article-point-box is-layout-flow wp-block-group-is-layout-flow\" style=\"border-color:#d7edf8;border-width:1px;border-style:solid;border-radius:2px;margin-top:24px;margin-bottom:24px;overflow:hidden;\">\n\n<p class=\"article-point-box__header wp-block-paragraph\" style=\"background-color:#2083c7;color:#fff;text-align:center;padding:10px 12px;margin:0;font-size:18px;line-height:1.5;font-weight:700;\"><strong>\u30dd\u30a4\u30f3\u30c8<\/strong><\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"background-color:#fff;padding:16px;margin:0;font-size:18px;line-height:1.9;\">\u8ff7\u3063\u305f\u3068\u304d\u306f\u3001\u8981\u4ef6\u5b9a\u7fa9\u3067\u5bfe\u5fdc\u30d6\u30e9\u30a6\u30b6\u3068\u30c7\u30d0\u30a4\u30b9\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u76ee\u6a19\u3092\u5177\u4f53\u7684\u306b\u6c7a\u3081\u3066\u304a\u304f\u3053\u3068\u304c\u3001\u8a2d\u8a08\u3084\u30c6\u30b9\u30c8\u3067\u306e\u624b\u623b\u308a\u3092\u6e1b\u3089\u3059\u624b\u7acb\u3066\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n<\/div>\n\n\n\n<h2 id=\"css3-cost-breakdown\" class=\"wp-block-heading\" style=\"background:#c3d3e1; padding:12px 20px; margin:32px 0 16px; color:#222;\">\n<strong>\u8cbb\u7528\u76f8\u5834\u3068\u30b3\u30b9\u30c8\u306e\u5185\u8a33<\/strong>\n<\/h2>\n\n\n<figure class=\"wp-block-image aligncenter size-full\" style=\"max-width:640px;margin:24px auto;\"><img loading=\"lazy\" decoding=\"async\" data-attachment-id=\"182811\" data-permalink=\"https:\/\/www.ripla.co.jp\/blog\/image-2-29e65dba8c0a\/\" data-orig-file=\"https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/10\/image-2-29e65dba8c0a.webp\" data-orig-size=\"1672,941\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;,&quot;alt&quot;:&quot;&quot;}\" data-image-title=\"CSS3\u958b\u767a\u306e\u898f\u6a21\u5225\u8cbb\u7528\u76f8\u5834\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u898f\u6a21\u304c\u5927\u304d\u304f\u306a\u308b\u307b\u3069\u3001\u8cbb\u7528\u306e\u76ee\u5b89\u3082\u4e0a\u304c\u308a\u307e\u3059\u3002&lt;\/p&gt;\n\" data-large-file=\"https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/10\/image-2-29e65dba8c0a-1024x576.webp\" src=\"https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/10\/image-2-29e65dba8c0a.webp\" alt=\"\u5c0f\u898f\u6a21\u30b3\u30fc\u30dd\u30ec\u30fc\u30c8\u30b5\u30a4\u30c8\u3001\u4e2d\u898f\u6a21EC\u30b5\u30a4\u30c8\u3084Web\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3001\u5927\u898f\u6a21\u306a\u30c7\u30b6\u30a4\u30f3\u30b7\u30b9\u30c6\u30e0\u3084SaaS\u306eUI\u30ea\u30cb\u30e5\u30fc\u30a2\u30eb\u306e\u8cbb\u7528\u7bc4\u56f2\u3092\u4e26\u3079\u305f\u56f3\u3002\" title=\"CSS3\u958b\u767a\u306e\u898f\u6a21\u5225\u8cbb\u7528\u76f8\u5834\" class=\"wp-image-182811\" width=\"1672\" height=\"941\" style=\"display:block;width:100%;height:auto;max-width:640px;\" srcset=\"https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/10\/image-2-29e65dba8c0a.webp 1672w, https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/10\/image-2-29e65dba8c0a-300x169.webp 300w, https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/10\/image-2-29e65dba8c0a-1024x576.webp 1024w, https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/10\/image-2-29e65dba8c0a-768x432.webp 768w, https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/10\/image-2-29e65dba8c0a-1536x864.webp 1536w\" sizes=\"auto, (max-width: 1672px) 100vw, 1672px\" \/><figcaption class=\"wp-element-caption\" style=\"font-size:12px;line-height:1.6;color:#777;margin-top:8px;text-align:center;\">\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u898f\u6a21\u304c\u5927\u304d\u304f\u306a\u308b\u307b\u3069\u3001\u8cbb\u7528\u306e\u76ee\u5b89\u3082\u4e0a\u304c\u308a\u307e\u3059\u3002<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">CSS3\u958b\u767a\u306e\u8cbb\u7528\u306f\u3001\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u898f\u6a21\u3084\u8981\u4ef6\u306b\u3088\u3063\u3066\u5927\u304d\u304f\u5909\u308f\u308a\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u4e00\u822c\u7684\u306a\u76f8\u5834\u3068\u8cbb\u7528\u306e\u5185\u8a33\u3092\u62bc\u3055\u3048\u3066\u304a\u304f\u3053\u3068\u304c\u5927\u5207\u3067\u3059\u3002\u4e88\u7b97\u3092\u7acb\u3066\u308b\u969b\u306f\u3001\u521d\u671f\u8cbb\u7528\u3060\u3051\u3067\u306a\u304f\u3001\u904b\u7528\u958b\u59cb\u5f8c\u306e\u30e9\u30f3\u30cb\u30f3\u30b0\u30b3\u30b9\u30c8\u307e\u3067\u898b\u636e\u3048\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 id=\"labor-cost\" class=\"wp-block-heading\" style=\"border-left:4px solid #0693e3;padding-left:16px;\"><strong>\u4eba\u4ef6\u8cbb\u3068\u5de5\u6570<\/strong><\/h3>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u8cbb\u7528\u3092\u6bd4\u3079\u308b\u3068\u304d\u306f\u3001\u4eba\u54e1\u5358\u4fa1\u3068\u4f5c\u696d\u7bc4\u56f2\u3092\u5206\u3051\u3066\u8003\u3048\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\" style=\"padding-left:1.25em;margin-left:0;line-height:1.9;margin:0 0 18px;\">\n<li><strong>\u4eba\u54e1\u5358\u4fa1<\/strong>\uff1a\u30a8\u30f3\u30b8\u30cb\u30a2\u3084\u30b3\u30fc\u30c0\u30fc\u306e\u5951\u7d04\u5f62\u614b\u306b\u3088\u308b\u5dee<\/li>\n<li><strong>\u6848\u4ef6\u898f\u6a21<\/strong>\uff1a\u30da\u30fc\u30b8\u6570\u3068UI\u306e\u8907\u96d1\u3055\u306b\u3088\u308b\u8cbb\u7528\u306e\u5909\u52d5<\/li>\n<li><strong>\u8ffd\u52a0\u5de5\u6570<\/strong>\uff1a\u30d6\u30e9\u30a6\u30b6\u5bfe\u5fdc\u3084\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u306e\u898b\u7a4d\u3082\u308a<\/li>\n<\/ul>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">2025\u5e74\u6642\u70b9\u306e\u65e5\u672c\u56fd\u5185\u3067\u306f\u3001\u4e2d\u7d1a\u306e\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u5358\u4fa1\u306f\u6708\u984d60\u4e07\u301c90\u4e07\u5186\u3067\u3059\u3002\u30b7\u30cb\u30a2\u30af\u30e9\u30b9\u306e\u30a8\u30f3\u30b8\u30cb\u30a2\u306f\u3001\u6708\u984d90\u4e07\u301c130\u4e07\u5186\u7a0b\u5ea6\u304c\u4e00\u822c\u7684\u3067\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u30d5\u30ea\u30fc\u30e9\u30f3\u30b9\u306e\u30b3\u30fc\u30c0\u30fc\u306a\u3089\u3001\u6708\u984d40\u4e07\u301c70\u4e07\u5186\u7a0b\u5ea6\u3067\u53ce\u307e\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u8a2d\u8a08\u529b\u3084\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u7ba1\u7406\u80fd\u529b\u306f\u3001\u958b\u767a\u4f1a\u793e\u3088\u308a\u9650\u5b9a\u7684\u306a\u5834\u5408\u304c\u3042\u308b\u305f\u3081\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u898f\u6a21\u5225\u306e\u76ee\u5b89\u306f\u3001\u5c0f\u898f\u6a21\u30b3\u30fc\u30dd\u30ec\u30fc\u30c8\u30b5\u30a4\u30c8\uff0810\u301c20\u30da\u30fc\u30b8\uff09\u306eCSS3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u304c50\u4e07\u301c150\u4e07\u5186\u3001\u4e2d\u898f\u6a21EC\u30b5\u30a4\u30c8\u3084Web\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u958b\u767a\u304c200\u4e07\u301c500\u4e07\u5186\u3067\u3059\u3002\u5927\u898f\u6a21\u306a\u30c7\u30b6\u30a4\u30f3\u30b7\u30b9\u30c6\u30e0\u306e\u69cb\u7bc9\u3084SaaS\u30d7\u30ed\u30c0\u30af\u30c8\u306eUI\u30ea\u30cb\u30e5\u30fc\u30a2\u30eb\u306f\u3001500\u4e07\u301c1500\u4e07\u5186\u4ee5\u4e0a\u304c\u76ee\u5b89\u3067\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u3053\u306e\u5de5\u6570\u306b\u306f\u3001CSS3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u3060\u3051\u3067\u306a\u304f\u3001\u30c7\u30b6\u30a4\u30f3\u30ab\u30f3\u30d7\u304b\u3089\u306e\u8a2d\u8a08\u30fb\u4ed5\u69d8\u5316\u3082\u542b\u307e\u308c\u307e\u3059\u3002\u30af\u30ed\u30b9\u30d6\u30e9\u30a6\u30b6\u5bfe\u5fdc\u306b\u306f\u3001\u5168\u4f53\u306e15\u301c25%\u7a0b\u5ea6\u3092\u898b\u8fbc\u307f\u307e\u3059\u3002\u307e\u305f\u3001\u30ec\u30b9\u30dd\u30f3\u30b7\u30d6\u5bfe\u5fdc\u306f\u3001\u30c7\u30b9\u30af\u30c8\u30c3\u30d7\u306e\u307f\u306e\u5834\u5408\u3068\u6bd4\u3079\u306640\u301c60%\u5897\u304c\u76ee\u5b89\u3067\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u8907\u96d1\u306a\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u306e\u5b9f\u88c5\u306f\u3001\u9759\u7684\u30da\u30fc\u30b8\u306e2\u301c3\u500d\u306e\u5de5\u6570\u3092\u8a08\u7b97\u306b\u5165\u308c\u307e\u3059\u3002\u898b\u7a4d\u3082\u308a\u3067\u306f\u3001\u30da\u30fc\u30b8\u6570\u306b\u52a0\u3048\u3066\u3001\u5404\u30da\u30fc\u30b8\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306e\u7a2e\u985e\u3068\u8907\u96d1\u5ea6\u3082\u8003\u616e\u3057\u307e\u3059\u3002\u300c\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u5358\u4f4d\u306e\u898b\u7a4d\u3082\u308a\u300d\u3092\u4f9d\u983c\u3059\u308b\u3068\u3001\u898b\u7a4d\u3082\u308a\u306e\u7cbe\u5ea6\u3092\u9ad8\u3081\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h3 id=\"running-cost\" class=\"wp-block-heading\" style=\"border-left:4px solid #0693e3;padding-left:16px;\"><strong>\u521d\u671f\u8cbb\u7528\u4ee5\u5916\u306e\u30e9\u30f3\u30cb\u30f3\u30b0\u30b3\u30b9\u30c8<\/strong><\/h3>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u516c\u958b\u5f8c\u3082\u3001\u4fdd\u5b88\u3068\u6539\u5584\u306e\u8cbb\u7528\u3092\u7d99\u7d9a\u3057\u3066\u898b\u8fbc\u307f\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\" style=\"padding-left:1.25em;margin-left:0;line-height:1.9;margin:0 0 18px;\">\n<li><strong>\u30d6\u30e9\u30a6\u30b6\u4fdd\u5b88<\/strong>\uff1a\u66f4\u65b0\u306b\u4f34\u3046\u8868\u793a\u5909\u66f4\u3078\u306e\u5bfe\u5fdc<\/li>\n<li><strong>\u7d99\u7d9a\u6539\u5584<\/strong>\uff1a\u65b0\u30da\u30fc\u30b8\u3084UI\u306e\u4fee\u6b63<\/li>\n<li><strong>\u30c4\u30fc\u30eb\u8cbb\u7528<\/strong>\uff1a\u30c7\u30b6\u30a4\u30f3\u3001\u30c6\u30b9\u30c8\u3001\u904b\u7528\u306b\u95a2\u308f\u308b\u8cbb\u7528<\/li>\n<\/ul>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u30d6\u30e9\u30a6\u30b6\u5bfe\u5fdc\u306f\u6708\u984d5\u4e07\u301c15\u4e07\u5186\u7a0b\u5ea6\u3001\u7d99\u7d9a\u6539\u5584\u306e\u4fdd\u5b88\u5951\u7d04\u306f\u6708\u984d10\u4e07\u301c30\u4e07\u5186\u7a0b\u5ea6\u304c\u76ee\u5b89\u3067\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">CSS3\u958b\u767a\u3067\u306f\u3001\u30ea\u30ea\u30fc\u30b9\u5f8c\u306b\u3082\u7d99\u7d9a\u7684\u306a\u30e9\u30f3\u30cb\u30f3\u30b0\u30b3\u30b9\u30c8\u304c\u304b\u304b\u308a\u307e\u3059\u3002\u307e\u305a\u3001\u30d6\u30e9\u30a6\u30b6\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3078\u306e\u5bfe\u5fdc\u30b3\u30b9\u30c8\u304c\u3042\u308a\u307e\u3059\u3002Chrome\u3001Safari\u3001Firefox\u3001Edge\u306a\u3069\u306e\u4e3b\u8981\u30d6\u30e9\u30a6\u30b6\u306f\u30016\u301c8\u9031\u9593\u3054\u3068\u306b\u30e1\u30b8\u30e3\u30fc\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3055\u308c\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u65b0\u3057\u3044\u30d0\u30fc\u30b8\u30e7\u30f3\u3067\u306eCSS3\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u5909\u66f4\u306b\u5bfe\u5fdc\u3059\u308b\u4fdd\u5b88\u4f5c\u696d\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 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18px;\">\u7d99\u7d9a\u7684\u306a\u6539\u5584\u3092\u5916\u6ce8\u3059\u308b\u5834\u5408\u306f\u3001\u4fdd\u5b88\u5951\u7d04\u3092\u7d50\u3076\u306e\u304c\u4e00\u822c\u7684\u3067\u3059\u3002\u958b\u767a\u30c4\u30fc\u30eb\u306e\u30e9\u30a4\u30bb\u30f3\u30b9\u8cbb\u7528\u3082\u7d99\u7d9a\u7684\u306b\u767a\u751f\u3057\u307e\u3059\u3002Figma\u3084Adobe Creative Cloud\u306a\u3069\u306e\u30c7\u30b6\u30a4\u30f3\u30c4\u30fc\u30eb\u306f\u5e74\u984d\u6570\u4e07\u301c\u5341\u6570\u4e07\u5186\u3001BrowserStack\u306a\u3069\u306e\u30c6\u30b9\u30c8\u30c4\u30fc\u30eb\u306f\u6708\u984d\u6570\u5343\u301c\u6570\u4e07\u5186\u3067\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">CI\/CD\u30c4\u30fc\u30eb\u3084\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u306e\u8cbb\u7528\u3082\u898b\u8fbc\u307f\u307e\u3059\u3002CSS3\u81ea\u4f53\u306b\u76f4\u63a5\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30ea\u30b9\u30af\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u305f\u3060\u3057\u3001\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u5168\u4f53\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u76e3\u67fb\u3084SSL\u8a3c\u660e\u66f8\u306e\u66f4\u65b0\u3082\u3001\u5e74\u9593\u306e\u30e9\u30f3\u30cb\u30f3\u30b0\u30b3\u30b9\u30c8\u306b\u542b\u3081\u307e\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u30c8\u30fc\u30bf\u30eb\u3067\u898b\u308b\u3068\u3001\u5e74\u9593\u306e\u30e9\u30f3\u30cb\u30f3\u30b0\u30b3\u30b9\u30c8\u306f\u521d\u671f\u958b\u767a\u8cbb\u7528\u306e15\u301c25%\u7a0b\u5ea6\u304c\u4e00\u822c\u7684\u306a\u76ee\u5b89\u3067\u3059\u3002<\/p>\n\n\n\n\n\n<div class=\"wp-block-group article-point-box is-layout-flow 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id=\"css3-estimation-tips\" class=\"wp-block-heading\" style=\"background:#c3d3e1; padding:12px 20px; margin:32px 0 16px; color:#222;\">\n<strong>\u898b\u7a4d\u3082\u308a\u3092\u53d6\u308b\u969b\u306e\u30dd\u30a4\u30f3\u30c8<\/strong>\n<\/h2>\n\n\n<figure class=\"wp-block-image aligncenter size-full\" style=\"max-width:640px;margin:24px auto;\"><img loading=\"lazy\" decoding=\"async\" data-attachment-id=\"182812\" data-permalink=\"https:\/\/www.ripla.co.jp\/blog\/image-3-c6c9b8d94acd\/\" data-orig-file=\"https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/10\/image-3-c6c9b8d94acd.webp\" data-orig-size=\"1672,941\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;,&quot;alt&quot;:&quot;&quot;}\" data-image-title=\"CSS3\u958b\u767a\u306e\u898b\u7a4d\u3082\u308a\u78ba\u8a8d\u30dd\u30a4\u30f3\u30c8\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;\u4f9d\u983c\u524d\u306e\u6e96\u5099\u304b\u3089\u5951\u7d04\u4e0a\u306e\u5099\u3048\u307e\u3067\u3001\u78ba\u8a8d\u3092\u6bb5\u968e\u7684\u306b\u9032\u3081\u3089\u308c\u307e\u3059\u3002&lt;\/p&gt;\n\" data-large-file=\"https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/10\/image-3-c6c9b8d94acd-1024x576.webp\" src=\"https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/10\/image-3-c6c9b8d94acd.webp\" alt=\"CSS3\u958b\u767a\u306e\u898b\u7a4d\u3082\u308a\u306b\u5411\u3051\u3066\u3001\u8981\u4ef6\u306e\u660e\u78ba\u5316\u3001\u8907\u6570\u793e\u306e\u6bd4\u8f03\u3001\u30ea\u30b9\u30af\u5bfe\u7b56\u3092\u78ba\u8a8d\u3059\u308b\u56f3\u3002\" title=\"CSS3\u958b\u767a\u306e\u898b\u7a4d\u3082\u308a\u78ba\u8a8d\u30dd\u30a4\u30f3\u30c8\" class=\"wp-image-182812\" width=\"1672\" height=\"941\" style=\"display:block;width:100%;height:auto;max-width:640px;\" srcset=\"https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/10\/image-3-c6c9b8d94acd.webp 1672w, https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/10\/image-3-c6c9b8d94acd-300x169.webp 300w, https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/10\/image-3-c6c9b8d94acd-1024x576.webp 1024w, https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/10\/image-3-c6c9b8d94acd-768x432.webp 768w, https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/10\/image-3-c6c9b8d94acd-1536x864.webp 1536w\" sizes=\"auto, (max-width: 1672px) 100vw, 1672px\" \/><figcaption class=\"wp-element-caption\" style=\"font-size:12px;line-height:1.6;color:#777;margin-top:8px;text-align:center;\">\u4f9d\u983c\u524d\u306e\u6e96\u5099\u304b\u3089\u5951\u7d04\u4e0a\u306e\u5099\u3048\u307e\u3067\u3001\u78ba\u8a8d\u3092\u6bb5\u968e\u7684\u306b\u9032\u3081\u3089\u308c\u307e\u3059\u3002<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">CSS3\u958b\u767a\u306e\u898b\u7a4d\u3082\u308a\u3067\u306f\u3001\u767a\u6ce8\u8005\u5074\u306e\u6e96\u5099\u3068\u78ba\u8a8d\u30dd\u30a4\u30f3\u30c8\u304c\u6210\u5426\u3092\u5927\u304d\u304f\u5de6\u53f3\u3057\u307e\u3059\u3002\u7684\u78ba\u306a\u898b\u7a4d\u3082\u308a\u3092\u5f97\u308b\u305f\u3081\u30013\u3064\u306e\u89b3\u70b9\u304b\u3089\u898b\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 id=\"requirements-clarification\" class=\"wp-block-heading\" style=\"border-left:4px solid #0693e3;padding-left:16px;\"><strong>\u8981\u4ef6\u660e\u78ba\u5316\u3068\u4ed5\u69d8\u66f8\u306e\u6e96\u5099<\/strong><\/h3>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u898b\u7a4d\u3082\u308a\u306e\u7cbe\u5ea6\u3092\u4e0a\u3052\u308b\u306b\u306f\u3001\u4f9d\u983c\u5185\u5bb9\u3092\u8a70\u3081\u3066\u304a\u304f\u3053\u3068\u304c\u5927\u5207\u3067\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\" style=\"padding-left:1.25em;margin-left:0;line-height:1.9;margin:0 0 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18px;\">\u4e00\u65b9\u3067\u3001\u30c7\u30b6\u30a4\u30f3\u30ab\u30f3\u30d7\u304c\u5b8c\u6210\u6e08\u307f\u3067\u3001PC\u30fb\u30bf\u30d6\u30ec\u30c3\u30c8\u30fb\u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3\u306e3\u30d6\u30ec\u30fc\u30af\u30dd\u30a4\u30f3\u30c8\u306b\u5bfe\u5fdc\u3059\u308b\u3001\u3068\u4f1d\u3048\u308b\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u30b9\u30af\u30ed\u30fc\u30eb\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u30925\u7b87\u6240\u306b\u5b9f\u88c5\u3057\u3001IE\u5bfe\u5fdc\u306f\u4e0d\u8981\u3068\u660e\u793a\u3059\u308c\u3070\u3001\u898b\u7a4d\u3082\u308a\u306e\u7cbe\u5ea6\u306b\u5927\u304d\u306a\u5dee\u304c\u51fa\u307e\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u898b\u7a4d\u3082\u308a\u306e\u4f9d\u983c\u524d\u306b\u306f\u3001Figma\u3084XD\u306e\u30c7\u30b6\u30a4\u30f3\u30ab\u30f3\u30d7\u3068\u3001\u30da\u30fc\u30b8\u69cb\u6210\u30fb\u753b\u9762\u9077\u79fb\u3092\u793a\u3059\u30b5\u30a4\u30c8\u30de\u30c3\u30d7\u3092\u6e96\u5099\u3057\u307e\u3059\u3002\u307e\u305f\u3001\u5bfe\u5fdc\u30d6\u30e9\u30a6\u30b6\u30fb\u30c7\u30d0\u30a4\u30b9\u306e\u8981\u4ef6\u4e00\u89a7\u3068\u3001\u65e2\u5b58\u30b7\u30b9\u30c6\u30e0\u3068\u306e\u9023\u643a\u8981\u4ef6\u3082\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">Core Web Vitals\u306e\u30b9\u30b3\u30a2\u306a\u3069\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u76ee\u6a19\u5024\u3082\u793a\u3059\u3053\u3068\u304c\u671b\u307e\u3057\u3044\u3067\u3057\u3087\u3046\u3002\u30c7\u30b6\u30a4\u30f3\u30ab\u30f3\u30d7\u304c\u672a\u5b8c\u6210\u3067\u3042\u3063\u3066\u3082\u3001\u6982\u7b97\u898b\u7a4d\u3082\u308a\u306f\u4f9d\u983c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u53c2\u8003\u306b\u3057\u305f\u3044Web\u30b5\u30a4\u30c8\u306eURL\u3068\u3001\u5b9f\u73fe\u3057\u305f\u3044\u6a5f\u80fd\u306e\u4e00\u89a7\u3092\u793a\u305b\u3070\u3001\u898b\u7a4d\u3082\u308a\u306e\u7cbe\u5ea6\u3092\u9ad8\u3081\u3089\u308c\u307e\u3059\u3002\u4ed5\u69d8\u304c\u307e\u3060\u4e0d\u660e\u78ba\u306a\u3089\u3001\u300c\u4ed5\u69d8\u672a\u78ba\u5b9a\u300d\u3068\u3057\u3066\u6982\u7b97\u91d1\u984d\u3092\u793a\u3057\u3066\u3082\u3089\u3044\u307e\u3059\u3002\u305d\u306e\u3046\u3048\u3067\u3001\u4ed5\u69d8\u304c\u56fa\u307e\u3063\u305f\u6bb5\u968e\u3067\u518d\u898b\u7a4d\u3082\u308a\u3092\u884c\u3048\u3070\u3001\u5f8c\u306e\u30c8\u30e9\u30d6\u30eb\u3092\u9632\u3052\u307e\u3059\u3002<\/p>\n\n\n\n<h3 id=\"compare-vendors\" class=\"wp-block-heading\" style=\"border-left:4px solid #0693e3;padding-left:16px;\"><strong>\u8907\u6570\u793e\u6bd4\u8f03\u3068\u767a\u6ce8\u5148\u306e\u9078\u3073\u65b9<\/strong><\/h3>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u767a\u6ce8\u5148\u306f\u3001\u91d1\u984d\u3068\u5b9f\u884c\u4f53\u5236\u3092\u3042\u308f\u305b\u3066\u6bd4\u3079\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\" style=\"padding-left:1.25em;margin-left:0;line-height:1.9;margin:0 0 18px;\">\n<li><strong>\u5185\u8a33<\/strong>\uff1a\u5de5\u7a0b\u5225\u306e\u5de5\u6570\u3068\u91d1\u984d\u306e\u78ba\u8a8d<\/li>\n<li><strong>\u5b9f\u7e3e<\/strong>\uff1a\u6280\u8853\u529b\u3068\u904e\u53bb\u306e\u5236\u4f5c\u7269\u306e\u78ba\u8a8d<\/li>\n<li><strong>\u652f\u63f4\u4f53\u5236<\/strong>\uff1a\u9032\u6357\u5831\u544a\u3068\u7d0d\u54c1\u5f8c\u306e\u5bfe\u5fdc\u306e\u78ba\u8a8d<\/li>\n<\/ul>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">CSS3\u958b\u767a\u306e\u767a\u6ce8\u5148\u306f\u3001\u6700\u4f4e\u3067\u30823\u793e\u4ee5\u4e0a\u304b\u3089\u898b\u7a4d\u3082\u308a\u3092\u53d6\u5f97\u3057\u3066\u6bd4\u8f03\u3059\u308b\u3053\u3068\u3092\u63a8\u5968\u3057\u307e\u3059\u3002\u898b\u7a4d\u3082\u308a\u3092\u6bd4\u3079\u308b\u969b\u306f\u3001\u91d1\u984d\u306e\u5927\u5c0f\u3088\u308a\u3082\u3001\u5185\u8a33\u306e\u7c92\u5ea6\u3068\u900f\u660e\u6027\u306b\u6ce8\u76ee\u3057\u307e\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u512a\u826f\u306a\u958b\u767a\u4f1a\u793e\u306e\u898b\u7a4d\u66f8\u306f\u3001\u8a2d\u8a08\u3001\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u958b\u767a\u3001\u30c6\u30b9\u30c8\u306a\u3069\u306e\u4f5c\u696d\u3054\u3068\u306b\u3001\u4f55\u306b\u3044\u304f\u3089\u304b\u304b\u308b\u304b\u3092\u660e\u8a18\u3057\u3066\u3044\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u8cbb\u7528\u306e\u4e2d\u8eab\u304c\u306f\u3063\u304d\u308a\u3057\u3066\u3044\u307e\u3059\u3002\u4e00\u65b9\u3067\u3001\u300cCSS\u958b\u767a\u4e00\u5f0f\uff1a\u25cb\u25cb\u4e07\u5186\u300d\u306e\u3088\u3046\u306b\u3001\u3056\u3063\u304f\u308a\u3068\u3057\u305f\u898b\u7a4d\u3082\u308a\u3057\u304b\u51fa\u3055\u306a\u3044\u4f1a\u793e\u306f\u3001\u5f8c\u304b\u3089\u8ffd\u52a0\u8cbb\u7528\u304c\u767a\u751f\u3059\u308b\u30ea\u30b9\u30af\u304c\u9ad8\u3044\u305f\u3081\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u9078\u5b9a\u306e\u57fa\u6e96\u306b\u306f\u3001CSS3\u306e\u6280\u8853\u529b\u3068\u5b9f\u7e3e\u3092\u793a\u3059\u30dd\u30fc\u30c8\u30d5\u30a9\u30ea\u30aa\u304c\u3042\u308a\u307e\u3059\u3002\u52a0\u3048\u3066\u3001\u30ec\u30b9\u30dd\u30f3\u30b9\u306e\u901f\u3055\u3084\u8cea\u554f\u3078\u306e\u56de\u7b54\u306a\u3069\u3001\u30b3\u30df\u30e5\u30cb\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u8cea\u3082\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u9032\u6357\u5831\u544a\u306e\u983b\u5ea6\u3084\u8ab2\u984c\u7ba1\u7406\u306e\u65b9\u6cd5\u306b\u52a0\u3048\u3001\u4fdd\u5b88\u5951\u7d04\u3084\u7dca\u6025\u5bfe\u5fdc\u306a\u3069\u3001\u7d0d\u54c1\u5f8c\u306e\u30b5\u30dd\u30fc\u30c8\u4f53\u5236\u3082\u8a55\u4fa1\u3057\u307e\u3059\u3002\u91d1\u984d\u9762\u3067\u306f\u3001\u6700\u3082\u5b89\u3044\u898b\u7a4d\u3082\u308a\u3092\u9078\u3076\u3088\u308a\u3082\u3001\u4e2d\u9593\u4fa1\u683c\u5e2f\u306e\u4f1a\u793e\u3092\u4e2d\u5fc3\u306b\u691c\u8a0e\u3059\u308b\u306e\u304c\u5b89\u5168\u3067\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u6975\u7aef\u306b\u5b89\u3044\u898b\u7a4d\u3082\u308a\u306b\u306f\u3001\u54c1\u8cea\u306e\u4f4e\u4e0b\u3084\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb\u9045\u5ef6\u306e\u30ea\u30b9\u30af\u3092\u4f34\u3046\u5834\u5408\u304c\u591a\u304f\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u7d50\u679c\u3001\u30b3\u30b9\u30c8\u304c\u81a8\u308c\u4e0a\u304c\u308b\u30b1\u30fc\u30b9\u3082\u5c11\u306a\u304f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h3 id=\"risk-management\" class=\"wp-block-heading\" style=\"border-left:4px solid #0693e3;padding-left:16px;\"><strong>\u6ce8\u610f\u3059\u3079\u304d\u30ea\u30b9\u30af\u3068\u5bfe\u7b56<\/strong><\/h3>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u4e3b\u306a\u30ea\u30b9\u30af\u306f\u3001\u5951\u7d04\u3068\u6280\u8853\u691c\u8a3c\u306e\u6bb5\u968e\u3067\u5bfe\u7b56\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\" style=\"padding-left:1.25em;margin-left:0;line-height:1.9;margin:0 0 18px;\">\n<li><strong>\u4ed5\u69d8\u5909\u66f4<\/strong>\uff1a\u8ffd\u52a0\u8cbb\u7528\u306e\u7b97\u5b9a\u30eb\u30fc\u30eb\u306e\u53d6\u308a\u6c7a\u3081<\/li>\n<li><strong>\u4e92\u63db\u6027<\/strong>\uff1a\u5bfe\u8c61\u30d6\u30e9\u30a6\u30b6\u3068\u4ee3\u66ff\u8868\u793a\u306e\u78ba\u8a8d<\/li>\n<li><strong>\u6027\u80fd<\/strong>\uff1aCSS\u306e\u6700\u9069\u5316\u306e\u8a08\u753b\u3078\u306e\u7d44\u307f\u8fbc\u307f<\/li>\n<\/ul>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">CSS3\u958b\u767a\u3067\u6700\u3082\u983b\u7e41\u306b\u8d77\u304d\u308b\u306e\u306f\u3001\u300c\u4ed5\u69d8\u5909\u66f4\u306b\u3088\u308b\u8ffd\u52a0\u8cbb\u7528\u300d\u306e\u30ea\u30b9\u30af\u3067\u3059\u3002\u958b\u767a\u306e\u9014\u4e2d\u3067\u30c7\u30b6\u30a4\u30f3\u306e\u5909\u66f4\u3084\u65b0\u6a5f\u80fd\u306e\u8ffd\u52a0\u304c\u767a\u751f\u3059\u308b\u3068\u3001\u5f53\u521d\u306e\u898b\u7a4d\u3082\u308a\u304b\u3089\u5927\u5e45\u306b\u30b3\u30b9\u30c8\u304c\u81a8\u308c\u4e0a\u304c\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u5909\u66f4\u306e\u9032\u3081\u65b9\u306b\u306f\u3001\u5909\u66f4\u7ba1\u7406\u30d7\u30ed\u30bb\u30b9\u3082\u542b\u307e\u308c\u307e\u3059\u3002\u6b21\u306b\u3001\u300c\u30d6\u30e9\u30a6\u30b6\u4e92\u63db\u6027\u306e\u554f\u984c\u300d\u3082CSS3\u7279\u6709\u306e\u30ea\u30b9\u30af\u3067\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u6700\u65b0\u306eCSS3\u6a5f\u80fd\u3092\u4f7f\u3046\u3068\u3001\u4e00\u90e8\u306e\u30d6\u30e9\u30a6\u30b6\u3084\u30d0\u30fc\u30b8\u30e7\u30f3\u3067\u60f3\u5b9a\u3069\u304a\u308a\u306b\u8868\u793a\u3055\u308c\u306a\u3044\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u7279\u306bSafari\u306f\u3001Chrome\u3084Firefox\u3068\u6bd4\u3079\u3066\u3001CSS3\u306e\u65b0\u6a5f\u80fd\u3078\u306e\u5bfe\u5fdc\u304c\u9045\u308c\u308b\u50be\u5411\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">Can I use\u306a\u3069\u306e\u4e92\u63db\u6027\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3067\u4e8b\u524d\u306b\u78ba\u8a8d\u3057\u3001\u4f7f\u7528\u3059\u308b\u6a5f\u80fd\u3092\u6c7a\u3081\u3066\u304a\u304d\u307e\u3059\u3002\u30d5\u30a9\u30fc\u30eb\u30d0\u30c3\u30af\uff08\u4ee3\u66ff\u8868\u793a\uff09\u306e\u8a2d\u8a08\u3092\u898b\u7a4d\u3082\u308a\u306b\u542b\u3081\u308c\u3070\u3001\u3053\u306e\u30ea\u30b9\u30af\u3092\u8efd\u6e1b\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u307e\u305f\u3001\u300c\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u52a3\u5316\u300d\u306e\u30ea\u30b9\u30af\u3082\u898b\u843d\u3068\u3055\u308c\u304c\u3061\u3067\u3059\u3002\u904e\u5ea6\u306aCSS\u30a2\u30cb\u30e1\u30fc\u30b7\u30e7\u30f3\u3084\u5197\u9577\u306a\u30b9\u30bf\u30a4\u30eb\u30b7\u30fc\u30c8\u306f\u3001\u30da\u30fc\u30b8\u306e\u63cf\u753b\u901f\u5ea6\u306b\u60aa\u5f71\u97ff\u3092\u53ca\u307c\u3057\u3001\u30e6\u30fc\u30b6\u30fc\u4f53\u9a13\u306e\u4f4e\u4e0b\u3084SEO\u8a55\u4fa1\u306e\u4e0b\u843d\u306b\u3064\u306a\u304c\u308a\u307e\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">Google\u304c\u516c\u8868\u3057\u3066\u3044\u308b\u3088\u3046\u306b\u3001\u30da\u30fc\u30b8\u306e\u8aad\u307f\u8fbc\u307f\u6642\u9593\u304c1\u79d2\u304b\u30893\u79d2\u306b\u5897\u3048\u308b\u3068\u3001\u30e2\u30d0\u30a4\u30eb\u3067\u306e\u96e2\u8131\u7387\u306f32%\u5897\u52a0\u3059\u308b\u3068\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u672a\u4f7f\u7528CSS\u306e\u524a\u9664\u306b\u306f\u30c4\u30ea\u30fc\u30b7\u30a7\u30a4\u30ad\u30f3\u30b0\u3092\u4f7f\u3048\u307e\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u30af\u30ea\u30c6\u30a3\u30ab\u30ebCSS\u306e\u30a4\u30f3\u30e9\u30a4\u30f3\u5316\u3084CSS\u30d5\u30a1\u30a4\u30eb\u306e\u5727\u7e2e\u30fb\u5206\u5272\u3082\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u5bfe\u7b56\u3068\u3057\u3066\u8a08\u753b\u306b\u7d44\u307f\u8fbc\u307f\u307e\u3059\u3002<\/p>\n\n\n\n\n\n<div class=\"wp-block-group article-point-box is-layout-flow wp-block-group-is-layout-flow\" style=\"border-color:#d7edf8;border-width:1px;border-style:solid;border-radius:2px;margin-top:24px;margin-bottom:24px;overflow:hidden;\">\n\n<p class=\"article-point-box__header wp-block-paragraph\" style=\"background-color:#2083c7;color:#fff;text-align:center;padding:10px 12px;margin:0;font-size:18px;line-height:1.5;font-weight:700;\"><strong>\u30dd\u30a4\u30f3\u30c8<\/strong><\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"background-color:#fff;padding:16px;margin:0;font-size:18px;line-height:1.9;\">\u898b\u7a4d\u3082\u308a\u306f\u4f9d\u983c\u5185\u5bb9\u3092\u5177\u4f53\u7684\u306b\u793a\u3057\u3001\u6bd4\u3079\u308b\u3068\u304d\u306f\u91d1\u984d\u3088\u308a\u5185\u8a33\u306e\u7c92\u5ea6\u3092\u898b\u308b\u3053\u3068\u304c\u5224\u65ad\u306e\u76ee\u5b89\u306b\u306a\u308a\u307e\u3059\u3002\u5951\u7d04\u6642\u306b\u4ed5\u69d8\u5909\u66f4\u306e\u7b97\u5b9a\u30eb\u30fc\u30eb\u3092\u6c7a\u3081\u3066\u304a\u3051\u3070\u3001\u8ffd\u52a0\u8cbb\u7528\u306e\u884c\u304d\u9055\u3044\u3092\u9632\u3052\u307e\u3059\u3002<\/p>\n\n<\/div>\n\n\n\n<h2 id=\"css3-summary\" class=\"wp-block-heading\" style=\"background:#c3d3e1; padding:12px 20px; margin:32px 0 16px; color:#222;\">\n<strong>\u307e\u3068\u3081<\/strong>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">CSS3\u958b\u767a\u306f\u3001\u73fe\u4ee3\u306eWeb\u30b5\u30a4\u30c8\u3084Web\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u6c42\u3081\u3089\u308c\u308b\u3001\u9ad8\u54c1\u8cea\u306a\u30e6\u30fc\u30b6\u30fc\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u5b9f\u73fe\u3059\u308b\u305f\u3081\u306e\u57fa\u76e4\u6280\u8853\u3067\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">CSS3\u306e\u4e3b\u8981\u6a5f\u80fd\u3068\u6d3b\u7528\u9818\u57df\u306b\u7d9a\u304d\u3001\u8981\u4ef6\u5b9a\u7fa9\u304b\u3089\u672c\u756a\u30ea\u30ea\u30fc\u30b9\u307e\u3067\u306e\u9032\u3081\u65b9\u3001\u8cbb\u7528\u76f8\u5834\u3068\u5185\u8a33\u3001\u898b\u7a4d\u3082\u308a\u306e\u30dd\u30a4\u30f3\u30c8\u3092\u898b\u3066\u304d\u307e\u3057\u305f\u3002\u6210\u529f\u306e\u305f\u3081\u306b\u306f\u3001\u8981\u4ef6\u5b9a\u7fa9\u3067\u5bfe\u5fdc\u30d6\u30e9\u30a6\u30b6\u3084\u30c7\u30d0\u30a4\u30b9\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u76ee\u6a19\u3092\u660e\u78ba\u306b\u3057\u307e\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u9069\u5207\u306aCSS\u8a2d\u8a08\u624b\u6cd5\u3092\u9078\u3073\u3001\u4fdd\u5b88\u6027\u3092\u78ba\u4fdd\u3057\u307e\u3059\u3002\u8907\u6570\u793e\u306e\u898b\u7a4d\u3082\u308a\u3067\u5185\u8a33\u306e\u900f\u660e\u6027\u3092\u6bd4\u3079\u3001\u30ea\u30ea\u30fc\u30b9\u5f8c\u306e\u30e9\u30f3\u30cb\u30f3\u30b0\u30b3\u30b9\u30c8\u307e\u3067\u4e88\u7b97\u306b\u542b\u3081\u307e\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">CSS3\u3067\u306f\u3001Container Queries\u3001Cascade Layers\u3001:has()\u30bb\u30ec\u30af\u30bf\u306a\u3069\u306e\u65b0\u6a5f\u80fd\u304c\u767b\u5834\u3057\u3001\u4e3b\u8981\u30d6\u30e9\u30a6\u30b6\u306e\u30b5\u30dd\u30fc\u30c8\u3082\u9032\u3093\u3067\u3044\u307e\u3059\u3002<\/p>\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">CSS3\u306e\u6700\u65b0\u52d5\u5411\u3092\u62bc\u3055\u3048\u3001\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u9069\u5207\u306b\u53d6\u308a\u5165\u308c\u308c\u3070\u3001\u3088\u308a\u52b9\u7387\u7684\u3067\u9ad8\u54c1\u8cea\u306a\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u958b\u767a\u3092\u5b9f\u73fe\u3067\u304d\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u25bc\u5168\u4f53\u30ac\u30a4\u30c9\u306e\u8a18\u4e8b<br><a href=\"https:\/\/www.ripla.co.jp\/blog\/product\/css3-development-complete-guide\/\" title=\"\">\u30fbCSS3\u958b\u767a\u306e\u5b8c\u5168\u30ac\u30a4\u30c9<\/a><\/p>\n\n\n\n<p class=\"wp-dl-link wp-block-paragraph\" style=\"font-size:18px;line-height:1.9;margin:0 0 18px;\">\u958b\u767a\u306e\u76f8\u8ac7\u524d\u306b\u53c2\u8003\u306b\u306a\u308b\u7121\u6599\u30db\u30ef\u30a4\u30c8\u30da\u30fc\u30d1\u30fc\u3068\u3057\u3066\u3001<a href=\"https:\/\/www.ripla.co.jp\/download\/12\">\u300cWeb\u30b5\u30fc\u30d3\u30b9\u958b\u767a\u306e\u5b8c\u5168\u30ac\u30a4\u30c9\u30d6\u30c3\u30af\u300d<\/a>\u3068<a href=\"https:\/\/www.ripla.co.jp\/download\/11\">\u300c\u30102026\u5e74\u6700\u65b0\u7248\u3011AI\u99c6\u52d5\u958b\u767a\u306e\u5b8c\u5168\u30ac\u30a4\u30c9\u30d6\u30c3\u30af\u300d<\/a>\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 id=\"company-intro\" class=\"wp-block-heading\" style=\"background:#c3d3e1; padding:12px 20px; margin:32px 0 16px; color:#222;\"><strong>\u4f1a\u793e\u7d39\u4ecb<\/strong><\/h2>\n\n\n\n<div class=\"wp-block-group is-vertical is-content-justification-stretch is-layout-flex wp-container-core-group-is-layout-898606d5 wp-block-group-is-layout-flex\">\n<p class=\"wp-block-paragraph\">\u682a\u5f0f\u4f1a\u793eripla\u3067\u306f\u3001\u304a\u5ba2\u69d8\u306e\u4e8b\u696d\u30fb\u30e6\u30fc\u30b6\u30fc\u30fb\u696d\u52d9\u306b\u6700\u9069\u5316\u3057\u305f\u30aa\u30fc\u30c0\u30fc\u30e1\u30a4\u30c9\u578b\u30b7\u30b9\u30c6\u30e0\u3092\u3001\u69cb\u60f3\u7b56\u5b9a\u30fb\u8981\u4ef6\u5b9a\u7fa9\u304b\u3089\u958b\u767a\u30fb\u6539\u5584\u307e\u3067\u4e00\u6c17\u901a\u8cab\u3067\u652f\u63f4\u3002\u4e8b\u696d\u4f1a\u793e\u3067IT\u30fbDX\u3092\u7d4c\u9a13\u3057\u305f\u30d7\u30ed\u30d5\u30a7\u30c3\u30b7\u30e7\u30ca\u30eb\u306b\u3088\u308b\u9ad8\u3044\u8981\u4ef6\u5b9a\u7fa9\u529b\u30fb\u30b7\u30b9\u30c6\u30e0\u8a2d\u8a08\u529b\u3092\u6d3b\u304b\u3057\u3001\u4e8b\u696d\u6210\u679c\u306e\u6700\u5927\u5316\u306b\u4f34\u8d70\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-794e3cfa wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" data-attachment-id=\"48106\" data-permalink=\"https:\/\/www.ripla.co.jp\/blog\/ripla-ordermade-system-202608\/\" data-orig-file=\"https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/08\/ripla-ordermade-system-202608.png\" data-orig-size=\"1672,941\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;,&quot;alt&quot;:&quot;&quot;}\" data-image-title=\"\u304a\u5ba2\u69d8\u306b\u6700\u9069\u5316\u3057\u305f\u30aa\u30fc\u30c0\u30fc\u30e1\u30a4\u30c9\u578b\u30b7\u30b9\u30c6\u30e0\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/08\/ripla-ordermade-system-202608-1024x576.png\" src=\"https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/08\/ripla-ordermade-system-202608-1024x576.png\" alt=\"\" class=\"wp-image-48106\" srcset=\"https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/08\/ripla-ordermade-system-202608-1024x576.png 1024w, https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/08\/ripla-ordermade-system-202608-300x169.png 300w, https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/08\/ripla-ordermade-system-202608-768x432.png 768w, https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/08\/ripla-ordermade-system-202608-1536x864.png 1536w, https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2026\/08\/ripla-ordermade-system-202608.png 1672w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u307e\u305f\u3001\u5f53\u793e\u72ec\u81ea\u306e\u958b\u767a\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u300cBox\u30b7\u30ea\u30fc\u30ba\u300d\u306b\u3088\u308b\u6a19\u6e96\u6a5f\u80fd\u306e\u9ad8\u901f\u958b\u767a\u3068\u3001AI\u99c6\u52d5\u958b\u767a\u306e\u72ec\u81ea\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u300cGoDD\u300d\u306b\u3088\u308b\u72ec\u81ea\u6a5f\u80fd\u306eAI\u5b9f\u88c5\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u4f4e\u30b3\u30b9\u30c8\u30fb\u77ed\u671f\u9593\u3067\u958b\u767a\u3092\u5b9f\u73fe\u3044\u305f\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-794e3cfa wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"369\" data-attachment-id=\"18450\" data-permalink=\"https:\/\/www.ripla.co.jp\/blog\/product\/cross-platform-development-guide\/attachment\/%e3%82%b9%e3%82%af%e3%83%aa%e3%83%bc%e3%83%b3%e3%82%b7%e3%83%a7%e3%83%83%e3%83%88-2026-07-07-144340\/\" data-orig-file=\"https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2025\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-07-07-144340.png\" data-orig-size=\"1325,477\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;,&quot;alt&quot;:&quot;&quot;}\" data-image-title=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2026-07-07 144340\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2025\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-07-07-144340-1024x369.png\" src=\"https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2025\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-07-07-144340-1024x369.png\" alt=\"\" class=\"wp-image-18450\" srcset=\"https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2025\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-07-07-144340-1024x369.png 1024w, https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2025\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-07-07-144340-300x108.png 300w, https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2025\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-07-07-144340-768x276.png 768w, https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2025\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-07-07-144340.png 1325w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n<\/div>\n\n\n\n<p class=\"has-text-align-left wp-block-paragraph\">\u3082\u3057\u3001\u30b7\u30b9\u30c6\u30e0\u958b\u767a\u3084\u30d7\u30ed\u30c0\u30af\u30c8\u958b\u767a\u306b\u95a2\u3059\u308b\u3054\u8981\u671b\u304c\u3054\u3056\u3044\u307e\u3057\u305f\u3089\u3001\u304a\u6c17\u8efd\u306b\u304a\u554f\u3044\u5408\u308f\u305b\u304f\u3060\u3055\u3044\u3002<a href=\"https:\/\/www.ripla.co.jp\/company-whitepaper\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a><\/p>\n\n\n\n<div class=\"wp-block-buttons alignwide is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-a0cd93e3 wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-background wp-element-button\" href=\"https:\/\/www.ripla.co.jp\/\" style=\"background-color:#0720e3\"><strong>\u682a\u5f0f\u4f1a\u793eripla\u306e\u4f1a\u793eHP\u306f\u3053\u3061\u3089<\/strong><\/a><\/div>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/www.ripla.co.jp\/company-whitepaper\" title=\"\">\u30fb\u30b5\u30fc\u30d3\u30b9\u6982\u8981\u8cc7\u6599\u306eURL\u306f\u3053\u3061\u3089 &gt;&gt;&gt;<\/a><br><a href=\"https:\/\/www.ripla.co.jp\/inquiries\" title=\"\">\u30fb\u304a\u554f\u5408\u305b\u30da\u30fc\u30b8\u306eURL\u306f\u3053\u3061\u3089 &gt;&gt;&gt;<\/a><br><a href=\"https:\/\/www.ripla.co.jp\/whitepaper\" title=\"\">\u30fb\u304a\u5f79\u7acb\u3061\u8cc7\u6599\u306eURL\u306f\u3053\u3061\u3089 &gt;&gt;&gt;<\/a><\/p>\n<\/div>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><a href=\"https:\/\/www.ripla.co.jp\/whitepaper\"><img loading=\"lazy\" decoding=\"async\" width=\"967\" height=\"573\" data-attachment-id=\"4184\" data-permalink=\"https:\/\/www.ripla.co.jp\/blog\/?attachment_id=4184\" data-orig-file=\"https:\/\/www.ripla.co.jp\/blog\/wp-content\/uploads\/2025\/05\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2026-02-27-145451.png\" data-orig-size=\"967,573\" data-comments-opened=\"1\" 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